/**
 * Copyright [2019] [LiBo/Alex of copyright liboware@gmail.com ]
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.hyts.datasource.register;

import com.hyts.datasource.annotation.MultiDataSource;
import com.hyts.datasource.context.DataSourceContextHolder;
import com.hyts.datasource.enums.SupportDatasource;
import org.springframework.context.annotation.ImportSelector;
import org.springframework.core.annotation.AnnotationAttributes;
import org.springframework.core.type.AnnotationMetadata;

import java.util.Objects;
import java.util.function.Predicate;

/**
 * @project-name:coffice-toolbox
 * @package-name:com.hyts.datasource.register
 * @author:LiBo/Alex
 * @create-date:2020-05-08 17:33
 * @copyright:libo-alex4java
 * @email:liboware@gmail.com
 * @description:
 */
public class MultiDataSourceRegister implements ImportSelector {

    @Override
    public String[] selectImports(AnnotationMetadata annotationMetadata) {
        AnnotationAttributes annotationAttributes = AnnotationAttributes.fromMap(annotationMetadata.getAnnotationAttributes(MultiDataSource.class.getName(),
                false));
        if(Objects.nonNull(annotationAttributes)){
            Object object = annotationAttributes.get("datasourceType");
            SupportDatasource[] supportDatasourceEnums = (SupportDatasource[]) object;
            for (SupportDatasource supportDatasourceEnum : supportDatasourceEnums) {
                DataSourceContextHolder.addDatasource(supportDatasourceEnum);
            }
        }
        return new String[0];
    }

    @Override
    public Predicate<String> getExclusionFilter() {
        return null;
    }
}
